mirror of
https://github.com/graphql-python/graphene-django.git
synced 2024-11-26 11:33:44 +03:00
111 lines
3.1 KiB
ReStructuredText
111 lines
3.1 KiB
ReStructuredText
Authorization in Django
|
|
=======================
|
|
|
|
There are two main ways you may want to limit access to data when
|
|
working with Graphene and Django: limiting which fields are accessible
|
|
via GraphQL and limiting which objects a user can access.
|
|
|
|
Let's use a simple example model.
|
|
|
|
.. code:: python
|
|
|
|
from django.db import models
|
|
|
|
class Post(models.Model):
|
|
name = models.CharField(max_length=100)
|
|
content = models.TextField()
|
|
published = models.BooleanField(default=False)
|
|
owner = models.ForeignKey('auth.User')
|
|
|
|
Limiting Field Access
|
|
---------------------
|
|
|
|
This is easy, simply use the ``only_fields`` meta attribute.
|
|
|
|
.. code:: python
|
|
|
|
from graphene import relay
|
|
from graphene_django.types import DjangoObjectType
|
|
from .models import Post
|
|
|
|
class PostNode(DjangoObjectType):
|
|
class Meta:
|
|
model = Post
|
|
only_fields = ('title', 'content')
|
|
interfaces = (relay.Node, )
|
|
|
|
Queryset Filtering On Lists
|
|
---------------------------
|
|
|
|
In order to filter which objects are available in a queryset-based list,
|
|
define a resolve method for that field and return the desired queryset.
|
|
|
|
.. code:: python
|
|
|
|
from graphene import ObjectType
|
|
from graphene_django.filter import DjangoFilterConnectionField
|
|
from .models import Post
|
|
|
|
class Query(ObjectType):
|
|
all_posts = DjangoFilterConnectionField(CategoryNode)
|
|
|
|
def resolve_all_posts(self, args, info):
|
|
return Post.objects.filter(published=True)
|
|
|
|
User-based Queryset Filtering
|
|
-----------------------------
|
|
|
|
If you are using ``GraphQLView`` you can access Django's request
|
|
with the context argument.
|
|
|
|
.. code:: python
|
|
|
|
from graphene import ObjectType
|
|
from graphene_django.filter import DjangoFilterConnectionField
|
|
from .models import Post
|
|
|
|
class Query(ObjectType):
|
|
my_posts = DjangoFilterConnectionField(CategoryNode)
|
|
|
|
def resolve_my_posts(self, args, context, info):
|
|
# context will reference to the Django request
|
|
if not context.user.is_authenticated():
|
|
return Post.objects.none()
|
|
else:
|
|
return Post.objects.filter(owner=context.user)
|
|
|
|
If you're using your own view, passing the request context into the
|
|
schema is simple.
|
|
|
|
.. code:: python
|
|
|
|
result = schema.execute(query, context_value=request)
|
|
|
|
Filtering ID-based node access
|
|
------------------------------
|
|
|
|
In order to add authorization to id-based node access, we need to add a
|
|
method to your ``DjangoObjectType``.
|
|
|
|
.. code:: python
|
|
|
|
from graphene_django.types import DjangoObjectType
|
|
from .models import Post
|
|
|
|
class PostNode(DjangoObjectType):
|
|
class Meta:
|
|
model = Post
|
|
only_fields = ('title', 'content')
|
|
interfaces = (relay.Node, )
|
|
|
|
@classmethod
|
|
def get_node(cls, id, context, info):
|
|
try:
|
|
post = cls._meta.model.objects.get(id=id)
|
|
except cls._meta.model.DoesNotExist:
|
|
return None
|
|
|
|
if post.published or context.user == post.owner:
|
|
return post
|
|
return None
|